2.General Economic Geology: A Textbook by William Harvey Emmons (1922)"The principal borax mineral is colemanite, the beds of which are locally 15 feet or
... colemanite reported. Town of Borate, San Bernardino works of Pacific ..."

3.The Non-metallic Minerals: Their Occurrence and Uses by George Perkins Merrill (1910)"Insoluble in cold water, and only slightly so in hot, the solution being alkaline.
Hardness, 1; specific gravity, 1.65. 3. colemanite. Composition. ..."

4.Geology of the Non-metallic Mineral Deposits Other Than Silicates by Amadeus William Grabau (1920)"... schists, and slates, cut by dikes of quartz-porphyry and by gabbro. Here, too,
it is associated with sulphides of the metals. Borates colemanite ..."

5.Mineral Deposits by Waldemar Lindgren (1919)"The upper part of the clay series carries gypsum, colemanite, and thin layers of
... Within the colemanite- bearing beds, which may be as much as 50 ..."

6.The Principles of Economic Geology by William Harvey Emmons (1918)"The solid matter in a spring on the margin of this lake contains 25.61 per cent.
B407. The principal borax minerals are colemanite ..."